Backwasher



FIG. 1 is a perspective view of a backwasher, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view, the left side being a mirror image thereof;

FIG. 5 is a top plan view, the bottom plan view being identical thereto. 

The ornamental design for a backwasher, as shown and described. 